mraa.c: add LOG_NOTICE to checkout what i2c bus is added from pci

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

src/mraa.c

@@ -957,6 +957,7 @@ mraa_find_i2c_bus_pci(const char* pci_device, const char *pci_id, const char* ad
                         if (token != NULL) {
                             int ret = -1;
                             if (mraa_atoi(token, &ret) == MRAA_SUCCESS) {
+                                syslog(LOG_NOTICE, "Adding i2c bus found on i2c-%d on adapter %s", ret, adapter_name);
                                 return ret;
                             }
                             return -1;